{"product_id":"iag-threaded-plugs-for-fa-cylinder-heads-set-of-8","title":"IAG Threaded Plugs for FA Cylinder Heads (Set of 8) WRX 15-21 \/ FR-S \/ BRZ 13-20| IAG-ENG-2020","description":"\u003ch3\u003e\u003cstrong\u003eProduct Fitment:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e2015-2021 Subaru WRX\u003c\/p\u003e\n\u003cp\u003e2013-2020 Subaru BRZ\u003c\/p\u003e\n\u003cp\u003e2013-2016 Scion FR-S\u003c\/p\u003e\n\u003cp data-start=\"257\" data-end=\"658\"\u003ePrevent catastrophic coolant and oil contamination issues with the IAG FA20 Cylinder Head Threaded Freeze Plug Upgrade. The FA20 engine’s OEM pressed-in freeze plugs are notorious for falling out under heat and pressure, especially in high-performance or modified setups. IAG's solution? Replace them with reliable threaded zinc-plated plugs that are precision-machined and sealed to last.\u003c\/p\u003e\n\u003cp data-start=\"683\" data-end=\"1008\"\u003eFrom the factory, FA20 heads use soft, pressed-in freeze plugs that can leak externally or internally, allowing coolant to mix with oil—a potential disaster. Even stock cars are at risk. The worst part? Most of these plugs are hidden behind timing and valve covers, so failures often go unnoticed until it’s too late.\u003c\/p\u003e\n\u003cp data-start=\"1010\" data-end=\"1233\"\u003eIAG removes these failure-prone plugs and replaces them with threaded plugs, a proven fix used in all IAG FA cylinder head packages. This service adds strength and long-term reliability for both street and race engines.\u003c\/p\u003e\n\u003ch3 data-start=\"1240\" data-end=\"1256\"\u003eFeatures:\u003c\/h3\u003e\n\u003cul data-start=\"1258\" data-end=\"1693\"\u003e\n\u003cli data-start=\"1258\" data-end=\"1361\"\u003e\n\u003cp data-start=\"1260\" data-end=\"1361\"\u003e\u003cstrong data-start=\"1260\" data-end=\"1299\"\u003eEliminates OEM Freeze Plug Failures\u003c\/strong\u003e\u003cbr data-start=\"1299\" data-end=\"1302\"\u003ePrevents coolant leaks and internal contamination issues.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1363\" data-end=\"1491\"\u003e\n\u003cp data-start=\"1365\" data-end=\"1491\"\u003e\u003cstrong data-start=\"1365\" data-end=\"1395\"\u003ePrecision-Machined Threads\u003c\/strong\u003e\u003cbr data-start=\"1395\" data-end=\"1398\"\u003eThreads are cut into (x4) locations on each cylinder head to accept durable threaded plugs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1493\" data-end=\"1596\"\u003e\n\u003cp data-start=\"1495\" data-end=\"1596\"\u003e\u003cstrong data-start=\"1495\" data-end=\"1524\"\u003eDurable Zinc-Plated Plugs\u003c\/strong\u003e\u003cbr data-start=\"1524\" data-end=\"1527\"\u003eDesigned for long-lasting corrosion resistance and optimal sealing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1700\" data-end=\"1712\"\u003eIncluded\u003c\/h3\u003e\n\u003cul data-start=\"1714\" data-end=\"1747\"\u003e\n\u003cli data-start=\"1714\" data-end=\"1747\"\u003e\n\u003cp data-start=\"1716\" data-end=\"1747\"\u003e(x8) Zinc-plated threaded plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1754\" data-end=\"1776\"\u003eInstallation details:\u003c\/h3\u003e\n\u003cul data-start=\"1778\" data-end=\"1992\"\u003e\n\u003cli data-start=\"1778\" data-end=\"1830\"\u003e\n\u003cp data-start=\"1780\" data-end=\"1830\"\u003e\u003cstrong data-start=\"1780\" data-end=\"1830\"\u003eCylinder heads must be removed from the engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1831\" data-end=\"1917\"\u003e\n\u003cp data-start=\"1833\" data-end=\"1917\"\u003e\u003cstrong data-start=\"1833\" data-end=\"1863\"\u003eMachine threading required\u003c\/strong\u003e – professional machining service strongly recommended\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1918\" data-end=\"1966\"\u003e\n\u003cp data-start=\"1920\" data-end=\"1966\"\u003e\u003cstrong data-start=\"1920\" data-end=\"1954\"\u003eUse Loctite 577 (not included)\u003c\/strong\u003e for sealant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1967\" data-end=\"1992\"\u003e\n\u003cp data-start=\"1969\" data-end=\"1992\"\u003e\u003cstrong data-start=\"1969\" data-end=\"1985\"\u003eTorque spec:\u003c\/strong\u003e 55 N·m\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IAG","offers":[{"title":"Default Title","offer_id":42072197398624,"sku":"IAG-ENG-2020","price":110.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1398\/9853\/files\/IAG-Threaded-Plugs-for-FA-Cylinder-Heads-Set-of-8-WRX-15-21-FR-S-BRZ-13-20-IAG-ENG-2020.jpg?v=1751492490","url":"https:\/\/www.importimageracing.com\/products\/iag-threaded-plugs-for-fa-cylinder-heads-set-of-8","provider":"Import Image Racing","version":"1.0","type":"link"}